In the Figure, a Uniform Ladder of Weight 200

question 28

Multiple Choice

In the figure, a uniform ladder of weight 200 N and length 10 m leans against a perfectly smooth wall. A firefighter of weight 600 N climbs a distance x up the ladder. The coefficient of static friction between the ladder and the floor is 0.50 . What is the maximum value of x for which the Iadder will not slip?

• A) 8.4 m
• B) 3.9 m
• C) 6.3 m
• D) 6.0 m
• E) 5.0 m